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Owl Nebula
释义
Owl Nebula
Encyclopedia
理学
行星状星云
释
Owl Nebula
夜枭星云
位于大熊星座的一个比较复杂的行星状星云。星表中的编号为M97和NGC3587。距离地球2030光年(621秒差距),视星等为9.9,年龄约8千年。又称猫头鹰星云。
Astronomy
Owl Nebula
夜枭星云
随便看
active wiretapping
ActiveX data object
ActiveX data object, ADO
ActiveX数据对象
active zone
activist art
activist public
activities of classes,the Young Pioneers and the Communist Youth League
activities of daily living, ADL
activity
activity analysis
activity assay of alteplase
activity assay of recombinant urate oxidase
activity-based learning
activity-based probe
Activity based project cost management
activity-based protein profiling
activity-based travel demand analysis
activity breakthrough
activity coefficient
activity constant
activity curriculum
activity decay
activity density relative to surface
activity determining method by vapor pressure measurement
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更新时间:2026/9/7 11:10:56